web.xml配置

在web.xml中init-param需配置在load-on-startup前面否则会报错

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
    <display-name>itcast-usemanage</display-name>
    
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/applicationContext*.xml</param-value>
    </context-param>
    
    <!--Spring的ApplicationContext 载入 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    
    <!-- 编码过滤器，以UTF8编码 -->
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- 配置SpringMVC框架入口 -->
    <servlet>
        <servlet-name>itcast-usemanage</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>   
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:itcast-usemanage-servlet.xml</param-value>
        </init-param>
        <!--
            init-param需在load-on-startup的前面
         -->
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>itcast-usemanage</servlet-name>
        <!--
            此处可以用/,*.xxx,/xxx/*
            servlet不可以用/*
         -->
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>
    
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>

</web-app>